package io.github.novaframe.config.druid;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import io.github.novaframe.config.NovaframeProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.sql.SQLException;

@Configuration
@ConditionalOnClass(DruidDataSource.class)
@AutoConfigureBefore(DataSourceAutoConfiguration.class)
public class DruidAutoConfiguration {

	private final NovaframeProperties novaframeProperties;

    @Autowired
    public DruidAutoConfiguration(NovaframeProperties novaframeProperties) {
        this.novaframeProperties = novaframeProperties;
    }

    @Bean
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(novaframeProperties.getDruid().getUrl());
        dataSource.setUsername(novaframeProperties.getDruid().getUsername());
        dataSource.setPassword(novaframeProperties.getDruid().getPassword());
        if (novaframeProperties.getDruid().getInitialSize() > 0) {
            dataSource.setInitialSize(novaframeProperties.getDruid().getInitialSize());
        }
        if (novaframeProperties.getDruid().getMinIdle() > 0) {
            dataSource.setMinIdle(novaframeProperties.getDruid().getMinIdle());
        }
        if (novaframeProperties.getDruid().getMaxActive() > 0) {
            dataSource.setMaxActive(novaframeProperties.getDruid().getMaxActive());
        }
        dataSource.setTestOnBorrow(novaframeProperties.getDruid().isTestOnBorrow());
        try {
            dataSource.init();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        return dataSource;
    }

    @Bean
    public ServletRegistrationBean DruidStatViewServle(){

       // org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
       ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");

       //添加初始化参数：initParams
       //白名单：
       servletRegistrationBean.addInitParameter("allow","127.0.0.1");

       //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
       servletRegistrationBean.addInitParameter("deny","192.168.1.73");

       //登录查看信息的账号密码.
       servletRegistrationBean.addInitParameter("loginUsername","admin");
       servletRegistrationBean.addInitParameter("loginPassword","123456");

       //是否能够重置数据.
       servletRegistrationBean.addInitParameter("resetEnable","false");
       return servletRegistrationBean;
    }

    @Bean
    public FilterRegistrationBean druidStatFilter(){

       FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

       //添加过滤规则.
       filterRegistrationBean.addUrlPatterns("/*");

       //添加不需要忽略的格式信息.
       filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
       return filterRegistrationBean;
    }

}
